Class: QReplay::TcpProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/qreplay/tcpprocessor.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ TcpProcessor

Returns a new instance of TcpProcessor.



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# File 'lib/qreplay/tcpprocessor.rb', line 9

def initialize
  @streams = {}
  @stream_processors = []
end

Instance Method Details

#add_stream_processor(processor) ⇒ Object 



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# File 'lib/qreplay/tcpprocessor.rb', line 14

def add_stream_processor processor
  @stream_processors << processor
end

#finalize ⇒ Object 



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# File 'lib/qreplay/tcpprocessor.rb', line 50

def finalize
  @streams.each do |k, stream|
    current = {:index => k, :data => stream[:data]}
    @stream_processors.each do |p|
      current = p.process_stream current
      break unless current
    end
  end

  @stream_processors.each do |p|
    p.finalize
  end
end

#inject(index, packet) ⇒ Object 



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# File 'lib/qreplay/tcpprocessor.rb', line 18

def inject index, packet
  stream_index = packet[:stream]
  if stream_index
    if packet[:tcp_flags][:syn] && packet[:tcp_flags][:ack] === false
      @streams[stream_index] = {
        :first => packet,
        :data => [],
      }
    elsif packet[:tcp_flags][:fin] || packet[:tcp_flags][:rst]
      if @streams[stream_index]
        current = {:index => stream_index, :data => @streams[stream_index][:data]}
        @stream_processors.each do |p|
          current = p.process_stream current
          break unless current
        end
        @streams.delete stream_index
      end
    else
      unless @streams[stream_index]
        @streams[stream_index] = {
          :first => packet,
          :data => [],
        }
      end

      packet[:type] = (packet[:from] == @streams[stream_index][:first][:from] && packet[:from_port] == @streams[stream_index][:first][:from_port]) ? :out : :in
      packet.delete :tcp_flags
      @streams[stream_index][:data] << packet if packet[:size] > 0
    end
  end
end